Food Chemistery
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ANALYSIS OF FOOD AND NATURAL PRODUCTS LABORATORY EXERCISE
Determination of total nitrogen in food and crude protein calculation
(Kjeldahl method)
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Responsible person: Assoc.Prof. Ing.Kateřina Riddellová, Ph.D.
CONTENT
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Required knowledge ............................................................................................................................ 3 Evaluative criteria ................................................................................................................................ 3 Laboratory exercise content ................................................................................................................. 3 Laboratory exercise schedule ............................................................................................................... 4 A. TOTAL NITROGEN DETERMINATION ACCORDING TO THE KJELDAHL METHOD USING THE KJELTEC SYSTEM 1002 ............................................................................................. 5 1. SCOPE ............................................................................................................................................. 5 2. BASIC PRINCIPLE ......................................................................................................................... 5 3. EQUIPMENT, MATERIALS AND SPECIAL LABORATORY GLASS ..................................... 5 4. CHEMICALS AND SOLUTIONS .................................................................................................. 5 5. PROCEDURE .................................................................................................................................. 6 5.1 Digestion
ANALYSIS OF FOOD AND NATURAL PRODUCTS LABORATORY EXERCISE
Determination of total nitrogen in food and crude protein calculation
(Kjeldahl method)
___________________________________________________________
Responsible person: Assoc.Prof. Ing.Kateřina Riddellová, Ph.D.
CONTENT
______________________________________________________________________________________________________________________
Required knowledge ............................................................................................................................ 3 Evaluative criteria ................................................................................................................................ 3 Laboratory exercise content ................................................................................................................. 3 Laboratory exercise schedule ............................................................................................................... 4 A. TOTAL NITROGEN DETERMINATION ACCORDING TO THE KJELDAHL METHOD USING THE KJELTEC SYSTEM 1002 ............................................................................................. 5 1. SCOPE ............................................................................................................................................. 5 2. BASIC PRINCIPLE ......................................................................................................................... 5 3. EQUIPMENT, MATERIALS AND SPECIAL LABORATORY GLASS ..................................... 5 4. CHEMICALS AND SOLUTIONS .................................................................................................. 5 5. PROCEDURE .................................................................................................................................. 6 5.1 Digestion